I’ve completed the exam in Jan 2019. I’ve started my study by taking the free and one Whizlab exam. That gave me the area of focus to further study. Then I’ve read the “AWS-Certified-Solutions-Architect-Official-Study-Guide”. Took the quizzes and tests in the study guide. After that I went back and took the rest of the Whizlab tests until I was getting around 90% pass on them. The Whizlab quizzes was very detail and it’s great further knowledge, but I thought the actual test wasn’t that detailed of questions.